SeaWorld Parks & Entertainment on Thursday announced the opening of 10 new attractions at its parks this year, including a new killer whale show at SeaWorlds in three cities, a cheetah-themed coaster at Busch Gardens Tampa Bay and a swim-through artificial reef at Discovery Cove in Orlando.Full story

The oil rigs that act as artificial reefs off the Louisiana coast have for decades supported marine life without menace—but now, oil from the Deepwater Horizon spill have tainted what used to be fertile waters. NBC's Kerry Sanders reports.